01 / 13The New Yorker≈ approximate level C12:15–2:19 .
02 / 13Big Think≈ approximate level B18:00–8:07
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03 / 13Big Think≈ approximate level A28:19–8:26
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04 / 13Sprouts≈ approximate level A20:40–0:43
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05 / 13TED-Ed≈ approximate level A22:11–2:13
.
06 / 13NBC News≈ approximate level B21:27–1:30
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07 / 13NBC News≈ approximate level A21:18–1:23
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08 / 13The Daily Show≈ approximate level C16:05–6:10
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09 / 13CrashCourse≈ approximate level A20:21–0:27
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10 / 13The Daily Show≈ approximate level B21:01–1:08
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11 / 13CrashCourse≈ approximate level C11:25–1:37
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12 / 13Big Think≈ approximate level B20:46–0:58
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13 / 13TED≈ approximate level C16:25–6:38
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